Demonstration of the Inscribed Angle
Explore the connection between inscribed angles and the angle at the point of intersection of a tangent and a chord. Drag point C to see that an inscribed angle is always half of the interecepted arc. You can change the inscribed angle measure with the slider. Drag point C so that is on top of point B. Click the check box that appears.
Matt James Lincoln Southwest High School Lincoln, NE firstname.lastname@example.org